tube status

4 files changed, 136 insertions, 0 deletions

diff --git a/lib/WebService/TFL/TubeStatus.pm b/lib/WebService/TFL/TubeStatus.pm
new file mode 100644
index 0000000..79230ce
--- /dev/null
+++ b/lib/WebService/TFL/TubeStatus.pm
@@ -0,0 +1,40 @@
+package WebService::TFL::TubeStatus;
+use Moose;
+use Moose::Util::TypeConstraints;
+use MooseX::Types::URI 'Uri';
+use XML::LibXML;
+use XML::LibXML::XPathContext;
+use WebService::TFL::TubeStatus::Response;
+use namespace::autoclean;
+
+has user_agent => (
+    isa => duck_type(['get']),
+    is => 'ro',
+    lazy_build => 1,
+);
+sub _build_user_agent {
+    require LWP::UserAgent;
+    my $ua = LWP::UserAgent->new();
+    $ua->env_proxy;
+    return $ua;
+}
+
+has uri => (
+    isa => Uri,
+    is => 'ro',
+    coerce => 1,
+    default => 'http://cloud.tfl.gov.uk/TrackerNet/LineStatus',
+);
+
+sub request {
+    my ($self) = @_;
+
+    my $doc = XML::LibXML->load_xml(location => $self->uri)
+        or die "Couldn't fetch tube status";
+    my $xpath=XML::LibXML::XPathContext->new($doc);
+    $xpath->registerNs('ws','http://webservices.lul.co.uk/');
+
+    return WebService::TFL::TubeStatus::Response->new_from_xml($doc,$xpath);
+}
+
+1;
diff --git a/lib/WebService/TFL/TubeStatus/Response.pm b/lib/WebService/TFL/TubeStatus/Response.pm
new file mode 100644
index 0000000..f8cd8bf
--- /dev/null
+++ b/lib/WebService/TFL/TubeStatus/Response.pm
@@ -0,0 +1,28 @@
+package WebService::TFL::TubeStatus::Response;
+use Moose;
+use WebService::TFL::TubeStatus::Response::Line;
+use namespace::autoclean;
+
+has lines => (
+    is => 'ro',
+    isa => 'ArrayRef[WebService::TFL::TubeStatus::Response::Line]',
+    required => 1,
+);
+
+sub new_from_xml {
+    my ($class,$doc,$xpath) = @_;
+
+    my @lines;
+
+    for my $ls ($xpath->findnodes(q{/ws:ArrayOfLineStatus/ws:LineStatus},$doc)) {
+        my ($line)=$xpath->findnodes(q{ws:Line},$ls);
+
+        my $line_object = WebService::TFL::TubeStatus::Response::Line->new_from_xml($line,$ls,$xpath);
+
+        push @lines,$line_object;
+    }
+
+    return $class->new({lines=>\@lines});
+}
+
+1;
diff --git a/lib/WebService/TFL/TubeStatus/Response/Line.pm b/lib/WebService/TFL/TubeStatus/Response/Line.pm
new file mode 100644
index 0000000..11d3538
--- /dev/null
+++ b/lib/WebService/TFL/TubeStatus/Response/Line.pm
@@ -0,0 +1,36 @@
+package WebService::TFL::TubeStatus::Response::Line;
+use Moose;
+use WebService::TFL::TubeStatus::Response::LineStatus;
+use namespace::autoclean;
+
+has id => (
+    is => 'ro',
+    isa => 'Num',
+    required => 1,
+);
+
+has name => (
+    is => 'ro',
+    isa => 'Str',
+    required => 1,
+);
+
+has status => (
+    is => 'ro',
+    isa => 'WebService::TFL::TubeStatus::Response::LineStatus',
+    required => 1,
+);
+
+sub new_from_xml {
+    my ($class,$line,$status,$xpath) = @_;
+
+    my %init_arg;
+
+    $init_arg{id} = $line->findvalue(q{@ID});
+    $init_arg{name} = $line->findvalue(q{@Name});
+    $init_arg{status} = WebService::TFL::TubeStatus::Response::LineStatus->new_from_xml($status,$xpath);
+
+    return $class->new(\%init_arg);
+}
+
+1;
diff --git a/lib/WebService/TFL/TubeStatus/Response/LineStatus.pm b/lib/WebService/TFL/TubeStatus/Response/LineStatus.pm
new file mode 100644
index 0000000..e223bb6
--- /dev/null
+++ b/lib/WebService/TFL/TubeStatus/Response/LineStatus.pm
@@ -0,0 +1,32 @@
+package WebService::TFL::TubeStatus::Response::LineStatus;
+use Moose;
+use namespace::autoclean;
+
+has is_active => (
+    is => 'ro',
+    isa => 'Bool',
+    required => 1,
+);
+
+has [qw(code class description details)] => (
+    is => 'ro',
+    isa => 'Str',
+    required => 1,
+);
+
+sub new_from_xml {
+    my ($class,$ls,$xpath) = @_;
+
+    my %init_arg;
+
+    my ($status) = $xpath->findnodes(q{ws:Status},$ls);
+    $init_arg{code} = $status->findvalue(q{@ID});
+    $init_arg{is_active} = $status->findvalue(q{@IsActive}) eq 'true';
+    $init_arg{class} = $status->findvalue(q{@CssClass});
+    $init_arg{description} = $status->findvalue(q{@Description});
+    $init_arg{details} = $ls->findvalue(q{@StatusDetails});
+
+    return $class->new(\%init_arg);
+}
+
+1;